The positions of four elements A, B, C and D in the modern periodic table are shown below. Which element is most likely to form an acidic oxide?

(a) A

(b) B

(b) C

(d) D



Metals form basic oxides and non-metals form acidic oxides .

In the periodic table, 

  • elements towards the left are metals  
  • whereas those towards the right are non metals
  • and the last row is for noble gasses

Among the given elements,  

  • A and B are metals and therefore form basic oxides
  • D is a noble gas
  • C is a non metal and forms acidic oxides.

Therefore, the correct option is (c) C

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CA Maninder Singh is a Chartered Accountant for the past 14 years and a teacher from the past 18 years. He teaches Science, Economics, Accounting and English at Teachoo